Our CP Series pulley is a pulley system with steel pulley wheels that accommodates light, and heavy-duty applications in many different industries. These cable pulley wheels are available in 5 different bearing thicknesses, 2 different bore conditions, 4 different bore diameters, 4 different outer groove diameters, and 5 different inner groove radiuses. CP series pulleys are standard plated steel pulley wheels with maximum mating cable diameters of .25 IN.